Instagram/Rei Kuromiya & Rie Kaneko TV REIRIE returns with debut major-label EP Amethyst, sharing the emotional reunion story and creative journey behind each track in an exclusive Billboard Japan... May 11, 2026 AceShowbiz - REIRIE is making a powerful comeback with their first major-label EP titled Amethyst, marking a new chapter for the duo formed by RIE (Rei Kuromiya) and REI (Rie Kaneko). After initially performing together in the same group, the two artists went their separate ways before reuniting about five years later to create the unit now known as REIRIE.